Tower heater



FIG.1 is a top front and left side perspective view of tower heater showing my new design;

FIG.2 is a front elevational view thereof;

FIG.3 is a rear elevational view thereof;

FIG.4 is a left side elevational view thereof;

FIG.5 is a right side elevational view thereof;

FIG.6 is a top plan view thereof; and,

FIG.7 is a bottom plan view thereof. 

The ornamental design for tower heater, as shown and described. 